Oil burner



May s. 1928. 1,668,697

C. L. RAYFIELD OIL BURNER Filed Jan. 22. 1926 Patented May 8, 1928.

UNITED STATES PATENT OFFICE.

CHARLES L. RAYFIELD, OF CHICAGO, ILLINOIS, ASSIGNOR TO RAYFIELD MANUFAC-TUBING COMPANY, A CORPORATION OF ILLINOIS.

OIL BURNER.

Application filed January 22, 1926. Serial Ho. 82,909.

This invention relates to an oil burner and more particularly to meansfor providing heated air for the combustion of the 011.

In a pressure type of oil burner, considerable heat is always generatedin compressing the air used in conveying the oil, but this heat hashitherto been dissipated and wasted.

It is an object of this invention to provide an oil burner in whichprovision is made for utilizing the heat so generated to raise thetemperature of the air usedin combustion and thus obtain a. greaterefiiciency of combustion. Other and further important objects of theinvention will hereinafter appear.

Fig. l is a front elevational View, with arts broken away, of an oilburner emodying the principles of my invention.

Fig. 2 is an end elevational View of the same, including a fragmentaryview of a furnace with which the oil burner is used.

The reference numeral 1 indicates a movable supporting platform on whichis mounted the oil burner 2 embodying the principles of my invention.Said oil burner 2 includes a motor 3 and suitable piping, valves,filters, oil pump, air compressor, and the like, all represented by thenumeral 4 but not forming a direct part of this invention. Said motor 3and mechanism 4 are housed within a closed casing 5 provided withapertures 6 adjacent the motor end. A fan 7 is mounted directly on themotor shaft 8 in such a position as to draw air through the apertures 6and circulate said air in the direction indicated by the arrows againstthe mechanism 4 and especially around the air compressor. As the aircompressor during operation becomes heated, the circulating air willabsorb this heat and in turn will be raised to a comparatively hightemperature. The air is then discharged from the casing 4 through a.combustion nozzle 9 along. with the oil, which is delivered through asmaller, inside tubing 12, preferably in the form of a spray. The airand oil .mixture is discharged directly into a furnace 10 through a door11 in said furnace.

The added heat which the air absorbs from the air compressor aidsgreatly in the efiiciency of the combustion of the oil and it alsoserves to cool the compressor and prevent the moving mechanism fromoverheating.

I am aware that many changes of detail may be made without departingfrom the principles of this invention, and I therefore do not purposelimitin the patent granted otherwise than necessitated by the prlor art.

I claim as my invention:

1. In combination in an oil burner a housng having openings in its wall,oil pumplng mechanism in said housing, an air compressor in saidhousing, means for sucking air into said housing through said openingsand for circulatin it around said compressor to cause it to be preheatedby the heat given off by said compressor, a nozzle connected to saidhousing into which oil from said mechanism is discharged and into whichsaid preheated air is discharged, and an oil line connected to saidpumping mechanism and arranged so as to receive heat from the heated airdelivered to said nozzle.

2. In combination in an oil burner a housing having openings in itswall, oil pumping mechanism in said housing, an air compressor in saidhousing, means for sucking air into said housing through said 0 eningsand for circulating it around sai compressor to cause it to be preheatedby the heat given off by said compressor, a nozzle connected to saidhousing into which oil from said mechanism is dischar ed and into whichsaid preheated air is disc ar ed, said nozzle comprising a tube connecteto said housing at one end and having its other end provided with adischarge orifice and an oil line connected to said pumping mechanismand extending into said tube so as to receive heat from the heated airdelivered to said nozzle.

3. In combination in an oil burner a housing having an apertured wall, amotor, a drive shaft driven by said motor and extending into saidhousing, air compressing 1 mechanism, oil pum ing mechanism, both walland to circulate said air about said of said mechanisms iieing disposedin said mechanisms to cause it to absorb some of the housing and beingdriven by said shaft, and heat given off by said compressing mecha- 10 afan positioned between said motor and nisrn.

5 said mechanisms and actuated by said shaft, In testimony whereof Ihave hereunto said fan being driven by said motor shaft subscribed myname. to suck air through the apertures in said CHARLES L. RAYFIELD.

